hi there!! I''m just trying to run a script that adds certain methods to all ActiveRecord::Base descendants, but what happens is that it seems that all models are loaded after the application runs ActiveRecord::Base.send(:descendants).each do |subclass| #do stuff end ActiveRecord::Base.send(:descendants) and ActiveRecord::Base.send(:subclasses) is allways empty []. I''ve tried it on config/environment.rb and config/application.rb with no success, can someone tell me what i can do about it? Thanks! -- Posted via http://www.ruby-forum.com/. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
On 6 May 2012, at 20:22, Guillem Vidal <lists-fsXkhYbjdPsEEoCn2XhGlw@public.gmane.org> wrote:> hi there!! > > I''m just trying to run a script that adds certain methods to all > ActiveRecord::Base descendants, but what happens is that it seems that > all models are loaded after the application runs > > ActiveRecord::Base.send(:descendants).each do |subclass| > #do stuff > end > > ActiveRecord::Base.send(:descendants) and > ActiveRecord::Base.send(:subclasses) is allways empty []. > > I''ve tried it on config/environment.rb and config/application.rb with no > success, can someone tell me what i can do about it? >You could just reopen ActiveRecord::Base. Create a new initializer (a ruby file in config/initializers) with: class ActiveRecord::Base def new_method # do stuff end end Does that help? Jeremy Walker http://www.ihid.co.uk> Thanks! > > -- > Posted via http://www.ruby-forum.com/. > > -- > You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. > To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org > To unsubscribe from this group, send email to rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org > For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en. >-- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
Jeremy Walker wrote in post #1059748:> On 6 May 2012, at 20:22, Guillem Vidal <lists-fsXkhYbjdPsEEoCn2XhGlw@public.gmane.org> wrote: > >> ActiveRecord::Base.send(:descendants) and >> ActiveRecord::Base.send(:subclasses) is allways empty []. >> >> I''ve tried it on config/environment.rb and config/application.rb with no >> success, can someone tell me what i can do about it? >> > > You could just reopen ActiveRecord::Base. Create a new initializer (a > ruby file in config/initializers) with: > > class ActiveRecord::Base > def new_method > # do stuff > end > end > > Does that help? > Jeremy Walker > http://www.ihid.co.ukNot in my case. What I want to do is define different method names depending on its relation, for example: ActiveRecord::Base.send(:descendants).each do |subclass| subclass.reflect_on_all_associations.each do |association| macro = association.macro #:has_one, :has_many... subclass.send(:define_method, "#{association.name}_tokens") do read_attribute(__method__[0..-8]) end end end -- Posted via http://www.ruby-forum.com/. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
tryied something different, but no success again:
Dir[Rails.root.join(''app/models/*.rb'').to_s].each do
|filename|
require filename #Connection not stablished...
klass = File.basename(filename).sub(/.rb$/,
'''').classify.safe_constantize
next unless klass.nil? ||
klass.ancestors.include?(ActiveRecord::Base)
klass.reflect_on_all_associations.each do |association|
klass.send(:define_method,
"#{association.name.to_s}_tokens")
do
read_attribute(__method__)
end
end
end
It raises connection not stablished.
Guillem Vidal wrote in post #1059754:> Jeremy Walker wrote in post #1059748:
>> On 6 May 2012, at 20:22, Guillem Vidal
<lists-fsXkhYbjdPsEEoCn2XhGlw@public.gmane.org> wrote:
>>
>>> ActiveRecord::Base.send(:descendants) and
>>> ActiveRecord::Base.send(:subclasses) is allways empty [].
>>>
>>> I''ve tried it on config/environment.rb and
config/application.rb with no
>>> success, can someone tell me what i can do about it?
>>>
>>
>> You could just reopen ActiveRecord::Base. Create a new initializer (a
>> ruby file in config/initializers) with:
>>
>> class ActiveRecord::Base
>> def new_method
>> # do stuff
>> end
>> end
>>
>> Does that help?
>> Jeremy Walker
>> http://www.ihid.co.uk
>
> Not in my case. What I want to do is define different method names
> depending on its relation, for example:
>
> ActiveRecord::Base.send(:descendants).each do |subclass|
> subclass.reflect_on_all_associations.each do |association|
> macro = association.macro #:has_one, :has_many...
> subclass.send(:define_method,
"#{association.name}_tokens") do
> read_attribute(__method__[0..-8])
> end
> end
> end
--
Posted via http://www.ruby-forum.com/.
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On 6 May 2012 22:13, Guillem Vidal <lists-fsXkhYbjdPsEEoCn2XhGlw@public.gmane.org> wrote:> Jeremy Walker wrote in post #1059748: > > On 6 May 2012, at 20:22, Guillem Vidal <lists-fsXkhYbjdPsEEoCn2XhGlw@public.gmane.org> wrote: > > > >> ActiveRecord::Base.send(:descendants) and > >> ActiveRecord::Base.send(:subclasses) is allways empty []. > >> > >> I''ve tried it on config/environment.rb and config/application.rb with no > >> success, can someone tell me what i can do about it? > >> > > > > You could just reopen ActiveRecord::Base. Create a new initializer (a > > ruby file in config/initializers) with: > > > > class ActiveRecord::Base > > def new_method > > # do stuff > > end > > end > > > > Does that help? > > Jeremy Walker > > http://www.ihid.co.uk > > Not in my case. What I want to do is define different method names > depending on its relation, for example: > > ActiveRecord::Base.send(:descendants).each do |subclass| > subclass.reflect_on_all_associations.each do |association| > macro = association.macro #:has_one, :has_many... > subclass.send(:define_method, "#{association.name}_tokens") do > read_attribute(__method__[0..-8]) > end > end > end >OK, so two more suggestions: 1) Use an after_initialize block in your config ( http://guides.rubyonrails.org/configuring.html#rails-general-configuration) to call your method_creation code. 2) Re-open the class (as per my prev suggestion) but write a create_association_tokens method that contains the code to define your reflected methods, and use ActiveRecord::Base''s after_initialize method to call that method on an object, thus creating your methods on an object-by-object basis, rather than for the class. I''m intrigued by the point of all this?> > -- > Posted via http://www.ruby-forum.com/. > > -- > You received this message because you are subscribed to the Google Groups > "Ruby on Rails: Talk" group. > To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org > To unsubscribe from this group, send email to > rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org > For more options, visit this group at > http://groups.google.com/group/rubyonrails-talk?hl=en. > >-- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
Well, I''d create a file and put it in /lib and include/initialize that file in the config.ru file before the actual app initialization (run YourApp::Application). On 06/05/2012, at 16:22, Guillem Vidal <lists-fsXkhYbjdPsEEoCn2XhGlw@public.gmane.org> wrote:> hi there!! > > I''m just trying to run a script that adds certain methods to all > ActiveRecord::Base descendants, but what happens is that it seems that > all models are loaded after the application runs > > ActiveRecord::Base.send(:descendants).each do |subclass| > #do stuff > end > > ActiveRecord::Base.send(:descendants) and > ActiveRecord::Base.send(:subclasses) is allways empty []. > > I''ve tried it on config/environment.rb and config/application.rb with no > success, can someone tell me what i can do about it? > > Thanks! > > -- > Posted via http://www.ruby-forum.com/. > > -- > You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. > To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org > To unsubscribe from this group, send email to rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org > For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en. >-- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
Jeremy Walker wrote in post #1059759:> On 6 May 2012 22:13, Guillem Vidal <lists-fsXkhYbjdPsEEoCn2XhGlw@public.gmane.org> wrote: > >> > You could just reopen ActiveRecord::Base. Create a new initializer (a >> > http://www.ihid.co.uk >> end >> end >> > > OK, so two more suggestions: > 1) Use an after_initialize block in your config ( > http://guides.rubyonrails.org/configuring.html#rails-general-configuration) > to call your method_creation code. > 2) Re-open the class (as per my prev suggestion) but write a > create_association_tokens method that contains the code to define your > reflected methods, and use ActiveRecord::Base''s after_initialize method > to > call that method on an object, thus creating your methods on an > object-by-object basis, rather than for the class. > > I''m intrigued by the point of all this?Sorry about the delay, I couldn''t access to a computer since now :(. Done it, but it raises me an error because i have a attr_writer, i need to initialize the method. module MyModule def self.included(base) base.send(:extend, InstanceMethods) base.send(:after_initialize, :set_reader_writer_tokens) end module InstanceMethods def set_reader_writer_tokens class.reflect_on_all_associations.each do |association| class.send(:define_method,"#{association.name.to_s}_tokens") do attribute(__method__) end self.class.send(:define_method, "#{association.name.to_s}_tokens=") do |value| write_attribute(__method__, self.another_custom_method) end end end end ActiveRecord::Base.send(:include, MyModule) Loading development environment (Rails 3.2.2) class OptionType < ActiveRecord::Base belongs_to :type end OptionType.new(:type_tokens => "ba,b") raises an unknown attribute :type_tokens. But if I first initialize the record withouth accessing to the attribute:> OptionType.new=> #<OptionType ...>> OptionType.new(:type_tokens => "ba,b")=> #<OptionType id: nil, name: nil, presentation: nil, created_at: nil, updated_at: nil> Then I can done it. The problem is that I need to set up that attribute before the initialitzation of the class. Is a very good approach, but still not enogh for a ruby on rails application. Maybe it can be done using method_missing... but I''m a little bit scared of overwriting activerecord method_missing, also it''s not clear. -- Posted via http://www.ruby-forum.com/. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
Rodrigo Vieira wrote in post #1059873:> Well, I''d create a file and put it in /lib and include/initialize that > file in the config.ru file before the actual app initialization (run > YourApp::Application).That worked! The problem is that this is only working when rails app starts, not on rake tasks or test/units. But from now on, what I need for my application is ok. Just to know... Is it possible to do add those methods on the entire application? (not only on the middleware) -- Posted via http://www.ruby-forum.com/. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
If the config.ru trick doesn''t work for you, you should try the same but only initializing the file in config/boot.rb, instead. This should work for sure. Sent from my iPod On 06/05/2012, at 16:22, Guillem Vidal <lists-fsXkhYbjdPsEEoCn2XhGlw@public.gmane.org> wrote:> hi there!! > > I''m just trying to run a script that adds certain methods to all > ActiveRecord::Base descendants, but what happens is that it seems that > all models are loaded after the application runs > > ActiveRecord::Base.send(:descendants).each do |subclass| > #do stuff > end > > ActiveRecord::Base.send(:descendants) and > ActiveRecord::Base.send(:subclasses) is allways empty []. > > I''ve tried it on config/environment.rb and config/application.rb with no > success, can someone tell me what i can do about it? > > Thanks! > > -- > Posted via http://www.ruby-forum.com/. > > -- > You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. > To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org > To unsubscribe from this group, send email to rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org > For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en. >-- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.